linux-kernel - Re: [PATCH] Prevent crash on missing sysfs attribute group

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Message-ID: <1333463264.2960.99.camel@laptop>
Date:	Tue, 03 Apr 2012 16:27:44 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Bruno Prémont <bonbons@...ux-vserver.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] Prevent crash on missing sysfs attribute group

On Tue, 2012-04-03 at 00:50 -0700, Eric W. Biederman wrote:
> 
> So I am asking that since perf is built in a way that actively makes
> debugging these kinds of problems hard that you please add additional
> debugging code to perf_pmu_register or some other better location so
> that simply registering something buggy with perf will show the bug.
> 
> 
Is there a convenient helper function that we can use that validates the
attribute_group structure? We could use such a function to do the
validation at a point where we still know where it came from.

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